function plotImgVecC(v)
  NEG = v;
  POS = NEG;
  NEG(find(NEG>=0)) = 0;
  POS(find(POS<0)) = 0;

  NEG = NEG / (min(NEG(:))-max(NEG(:)));
  POS = POS / (max(POS(:))-min(POS(:)));
%   IMG = ones([200 180 3]);       % All white image
%   IMG(:,:,2) = IMG(:,:,2) - NEG;
%   IMG(:,:,3) = IMG(:,:,3) - NEG; % Suppress green and blue to get red out
% 
%   IMG(:,:,1) = IMG(:,:,1) - POS;
%   IMG(:,:,2) = IMG(:,:,2) - POS; % Suppress red and green to get blue out

  IMG = zeros([size(v,1) size(v,2) 3]);
  IMG(:,:,1) = IMG(:,:,1) + NEG;
  IMG(:,:,2) = IMG(:,:,2) + POS;

  imshow(IMG);
end
